What kind of medicine do pear trees need before flowering? You know what?

Pear before flowering are generally applied, the purpose is very simple is to prevent flowering pear after receiving blights, affects the quality and quantity of flowering pear trees, for the next step to do the basic work of pear pollination. What medicine does the pear blossom need before flowering? Let the fruit of pear pollen introduce, pear blossom before how to fight drugs!
I need to control pests of pear rot disease, mainly stems rot, dry rot and scab, rust, root disease; pear Psylla, Huang Fenya, leaf mites, lucorum, scale insects, ticks etc.. Specific prevention measures are as follows:
1. scraping rough skin Alice, curettage of lesion, lesion of dry rot rot, and apply medicine to protect the wound, such as nail care ointment.
2. scraping thick skin Alice after spraying to a 30% intebuconazole and carbendazim (Fu Lian) suspension of 400 ~ 600 times liquid, 60% copper calcium and carbendazim (topclass) WP 300 ~ 400 times or 77% copper sulfate calcium (duoning) WP 300 ~ 400 times liquid, to eradicate residual tree pathogen.
3.3 August mid spraying 4.5% cypermethrin EC (Tianlong PO) 1000 ~ 1500 times liquid, 48% chlorpyrifos EC (Ding Yong) 1000 ~ 1500 times liquid, 25% cypermethrin and chlorpyrifos (extinguishing Dan) EC 800 ~ 1000 times or 35% endosulfan (Shuo Dan) EC 1500 times liquid 1 ~ 1000 ~ 2 times, killing overwintering pear psylla. With better effect in liquid silicone dragon.
4. flower bud growth stage, spraying a 3 ~ 5 Baume lime sulfur or 45% LSSS crystal 40 ~ 60 times liquid, killing the residual overwintering pests and mites. The orchard coccoiol serious, spraying 40% methidathion emulsifiable concentrate (speed scale g) 800 ~ 1000 times liquid.
5. after germination, flowering before spraying a 40% myclobutanil wettable powder wettable powder 2000 times liquid dispersiblegranule 2000 times or 12.5% diniconazole 6000 times liquid, 10% Difenoconazole water mixture, mixed with medicament against Psylla chinensis adults overwinter in the bud, killing the black spot and residual pear Psylla, and anti rust, a.lucorum, Janus Piri etc..
6. find root diseases, timely dig to dry, then use 77% copper sulfate calcium (duoning) WP 500 ~ 600 times liquid, 50% (the pioneer) captan WP 500 ~ 600 times or 60% copper calcium and carbendazim (topclass) WP 500 ~ 600 water double root liquid.
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